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1.
New Phytol ; 2024 Apr 08.
Artigo em Inglês | MEDLINE | ID: mdl-38584520

RESUMO

The loss of spines is one of the most important domestication traits for lettuce (Lactuca sativa). However, the genetics and regulation of spine development in lettuce remain unclear. We examined the genetics of spines in lettuce using a segregating population derived from a cross between cultivated and wild lettuce (Lactuca serriola). A gene encoding WUSCHEL-related homeobox transcription factor, named as WOX-SPINE1 (WS1), was identified as the candidate gene controlling the spine development in lettuce, and its function on spines was verified. A CACTA transposon was found to be inserted into the first exon of the ws1 allele, knocking out its function and leading to the lack of spines in cultivated lettuce. All lettuce cultivars investigated have the nonfunctional ws1 gene, and a selection sweep was found at the WS1 locus, suggesting its important role in lettuce domestication. The expression levels of WS1 were associated with the density of spines among different accessions of wild lettuce. At least two independent loss-of-function mutations in the ws1 gene caused the loss of spines in wild lettuce. These findings provide new insights into the development of spines and facilitate the exploitation of wild genetic resources in future lettuce breeding programs.

2.
J Control Release ; 369: 309-324, 2024 Apr 02.
Artigo em Inglês | MEDLINE | ID: mdl-38554771

RESUMO

Immunotherapy based on the PD-1/PD-L1 axis blockade has no benefit for patients diagnosed with colon cancer liver metastasis (CCLM) for the microsatellite stable/proficient mismatch repair (MSS/pMMR)) subtype, which is known as an immune-desert cancer featuring poor immunogenicity and insufficient CD8+ T cell infiltration in the tumor microenvironment. Here, a multifunctional nanodrug carrying a cyclin-dependent kinase (CDK)1/2/5/9 inhibitor and PD-L1 antibody is prepared to boost the immune checkpoint blockade (ICB)-based immunotherapy against MSS/pMMR CCLM via reversing the immunosuppressive tumor microenvironment. To enhance the MSS/pMMR CCLM-targeting efficacy, we modify the nanodrug with PD-L1 knockout cell membrane of this colon cancer subtype. First, CDKs inhibitor delivered by nanodrug down-regulates phosphorylated retinoblastoma and phosphorylated RNA polymerase II and meanwhile arrests the G2/M cell cycle in CCLM to promote immunogenic signal release, stimulate dendritic cell maturation, and enhance CD8+ T cell infiltration. Moreover, CDKi suppresses the secretion of immunosuppressive cytokines in tumor-associated myeloid cells sensitizing ICB therapy in CCLM. Notably, the great efficacy to activate immune responses is demonstrated in the patient-derived xenograft model and the patient-derived organoid model as well, revealing a clinical application potential. Overall, our study represents a promising therapeutic approach for targeting liver metastasis, remolding the tumor immune microenvironment (TIME), and enhancing the response of MSS/pMMR CCLM to boost ICB immunotherapy.

3.
Eur J Nutr ; 63(2): 639-651, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-38129361

RESUMO

PURPOSE: Pancreatic cancer (PC) is one of the most deadly human malignancies. Curcumin is a natural polyphenolic compound with wide-ranging pharmacological effects. Growing evidence suggests that curcumin has anticancer activity against PC, but the mechanism remains incompletely elucidated. This study aimed to investigate the effects and mechanisms of curcumin on the invasion and migration of PC cells. METHODS: Effect of curcumin on tissue factor pathway inhibitor (TFPI)-2 mRNA expression in PC cells was initially identified using qRT-PCR. Cytotoxicity of curcumin was assessed with MTT assays and IC50 was calculated. Involvement of ERK and JNK pathways, as well as protein expression of TFPI-2 and epithelial-mesenchymal transition (EMT)-related markers, were detected using immunoblotting. Invasion and migration of PC cells were examined using Transwell assays. TFPI-2 expression was manipulated by transfection with siRNA and shRNA. Rescue assays were used to validate the effect of curcumin on cell invasion and migration via TFPI-2. RESULTS: Curcumin increased the expression of TFPI-2 mRNA and protein in PC cells and attenuated cell invasion and migration. Curcumin also inhibited ERK and JNK pathways and EMT in PC cells. Knockdown of TFPI-2 partially reversed the inhibition of ERK and JNK pathways and EMT by curcumin. Mechanistically, curcumin upregulated TFPI-2, thereby inhibiting the ERK and JNK pathways, leading to the inhibition of EMT in PC cells. CONCLUSION: Collectively, curcumin inhibits ERK- and JNK-mediated EMT through upregulating TFPI-2, which in turn suppresses the migration and invasion of PC cells. These findings provide new insights into the antitumor mechanism of curcumin.


Assuntos
Curcumina , Glicoproteínas , Neoplasias Pancreáticas , Humanos , Curcumina/farmacologia , Linhagem Celular Tumoral , Movimento Celular , Transição Epitelial-Mesenquimal , Neoplasias Pancreáticas/tratamento farmacológico , Neoplasias Pancreáticas/genética , Neoplasias Pancreáticas/patologia , RNA Mensageiro , Proliferação de Células
4.
Artigo em Inglês | MEDLINE | ID: mdl-38088533

RESUMO

BACKGROUND: Although existing studies have shown that both repetitive transcranial magnetic stimulation (rTMS) and music therapy have advantages in the treatment of non-fluent aphasia, the efficacy of the combination of these two methods remains to be investigated. AIMS: To investigate the clinical efficacy of low-frequency rTMS combined with music therapy on language function and depression in patients with non-fluent aphasia after stroke. METHODS & PROCEDURES: A single-blind parallel randomised controlled trial was conducted. Sixty patients (mean duration = 93.78 days) with non-fluent aphasia after stroke were randomly divided into a traditional therapy group (n = 20), a music therapy group (n = 20) and a combined therapy group (n = 20, 1 Hz). The language function and depression were evaluated before and 3 weeks after treatment with the Chinese version of the Western Aphasia Battery scale, Boston Diagnostic Aphasia Examination scale and Stroke Aphasic Depression Questionnaire Hospital Version scale. OUTCOMES & RESULTS: The combined therapy group was significantly better in all outcomes than the traditional therapy group and was significantly better in depression than the music therapy group. The music therapy group was significantly better in repetition and depression than the traditional therapy group. Language improvement was positively correlated with depression improvement. For adverse events, only two patients in the combined therapy group showed slight dizziness during rTMS treatment and their symptoms improved after rest. CONCLUSIONS & IMPLICATIONS: Our preliminary randomised controlled study indicates that low-frequency rTMS combined with music therapy is feasible and safe in improving language function and depression in non-fluent aphasia patients after stroke. WHAT THIS PAPER ADDS: What is already known on this subject Repetitive transcranial magnetic stimulation (rTMS) and music therapy respectively have advantages in the treatment of non-fluent aphasia after stroke, but whether the combination of the two methods is more effective is still unknown. What this paper adds to the existing knowledge This is one of the first randomised control trials to investigate whether the clinical efficacy of low-frequency rTMS combined music therapy for non-fluent aphasia is better. The findings show that low-frequency rTMS combined music therapy is superior to traditional therapy in spontaneous speech, auditory comprehension, repetition, naming, aphasia quotient, functional language level and depression, and superior to music therapy in depression, while music therapy is superior to traditional therapy in repetition and depression. What are the potential or actual clinical implications of this work? Low-frequency rTMS combined music therapy may be a better method for treatment of non-fluent aphasia.

5.
Sci Rep ; 13(1): 21443, 2023 12 05.
Artigo em Inglês | MEDLINE | ID: mdl-38052924

RESUMO

The intricate involvement of Rho GTPases in a multitude of human malignancies and their diverse array of biological functions has garnered substantial attention within the scientific community. However, their expression pattern and potential role in gastric cancer (GC) remain unclear. In this study, we successfully identified two distinct subtypes associated with Rho GTPase-related gene (RGG) through consensus clustering analysis, which exhibited significant disparities in overall survival and the tumor microenvironment. Subsequently, an extensively validated risk model termed RGGscore was meticulously constructed to prognosticate the outcomes of GC patients. This model was further assessed and validated using an external cohort. Notably, the high RGGscore group was indicative of a poorer prognosis. Univariate and multivariate Cox regression analyses unveiled the RGGscore as an autonomous prognostic indicator for GC patients. Subsequent external validation, utilizing two cohorts of patients who underwent immunotherapy, demonstrated a significant correlation between a low RGGscore and improved response to immunotherapy. Additionally, the expression levels of three genes associated with RGGscore were examined using qRT-PCR. Taken together, a pioneering RGGscore model has been successfully established, showcasing its potential efficacy in offering valuable therapeutic guidance for GC.


Assuntos
Carcinoma , Neoplasias Gástricas , Humanos , Neoplasias Gástricas/genética , Análise por Conglomerados , Imunoterapia , Microambiente Tumoral , Proteínas rho de Ligação ao GTP/genética , Prognóstico
6.
Lymphat Res Biol ; 21(6): 565-573, 2023 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-37768813

RESUMO

Objective: The occurrence of breast cancer-related lymphedema (BCRL) in postoperative breast cancer survivors is described and the independent risk factors of BCRL are analyzed. A BCRL nomogram prediction model is constructed, and its effectiveness is evaluated to screen out high-risk patients with BCRL. Methods: A univariate analysis was carried out to determine the risk factors possibly related to BCRL, and a logistic regression analysis was utilized to determine the independent risk factors related to BCRL. A BCRL nomogram prediction model was built, and a nomogram was drawn by R software v4.1.0. The area under the curve (AUC) of the receiver operating characteristic (ROC) and the Hosmer-Lemeshow test were used to evaluate the efficacy of the constructed model to assess its clinical application value. Results: The risk factors independently associated with BCRL were body mass index (BMI), handedness on the operation side, no BCRL-related rehabilitation plan, axillary lymph node dissection (ALND), taxane-based chemotherapy, and radiotherapy (all p < 0.05). The BCRL nomogram prediction model was built on this basis, and the results of the efficacy evaluation showed a good fit: AUC = 0.952 (95% confidence interval: 0.930-0.973) for the ROC and χ2 = 6.963, p = 0.540 for the Hosmer-Lemeshow test. Conclusions: The risk factors for BCRL included higher BMI, handedness on the operation side, no BCRL-related rehabilitation plan, ALND, taxane-based chemotherapy, and radiotherapy. In addition, the BCRL nomogram prediction model accurately calculated the risk of possible BCRL among breast cancer survivors and effectively screened for high-risk patients with BCRL. Therefore, this prediction model can provide a basis for rehabilitation physicians and therapists to formulate early and individualized prevention and treatment programs.


Assuntos
Linfedema Relacionado a Câncer de Mama , Neoplasias da Mama , Linfedema , Humanos , Feminino , Neoplasias da Mama/complicações , Neoplasias da Mama/epidemiologia , Neoplasias da Mama/patologia , Linfedema/diagnóstico , Linfedema/epidemiologia , Linfedema/etiologia , Linfedema Relacionado a Câncer de Mama/diagnóstico , Linfedema Relacionado a Câncer de Mama/epidemiologia , Linfedema Relacionado a Câncer de Mama/etiologia , Excisão de Linfonodo/efeitos adversos , Fatores de Risco , Taxoides , Axila/patologia
7.
Int J Surg Case Rep ; 108: 108420, 2023 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-37384956

RESUMO

INTRODUCTION: Cystic adenomyosis is a rare variant of adenomyosis, with only 90 reported cases found in the literature so far. Diverticulum-like adenomyosis is even more uncommon, with only one documented case to date. CASE PRESENTATION: We report the case of a 42-year-old asymptomatic woman who had an incidental finding of a parauterine cyst on an abdominal computed tomography scan. B-ultrasonography also revealed an endometriotic cyst. Further MRI revealed a cystic lesion measuring 7.6 × 6.1 × 7.7 cm that communicated with the uterine cavity through a tiny channel. The fluid in the cyst showed high signal intensity on T1-weighted image (T1WI), and the cyst wall showed a marked low signal intensity on T2-weighted image (T2WI). No other masses were found on either side. After obtaining informed consent, we performed a laparoscopic exploration on the patient, where it became apparent that the 7.6 × 6.1 × 7.7 cm cystic mass was located on the left uterine isthmus-the excised lesion contained chocolate-like fluid within a thickened wall. Pathological examination revealed typical endometrial glands and interstitial tissues in the cystic wall. DISCUSSION: Cystic adenomyosis is a rare benign lesion in women of reproductive age that is known to cause hypermenorrhea, dysmenorrhea, and abnormal uterine bleeding. Our case represents the second documented case of diverticulum-like adenomyosis. However, the patient in our case did not exhibit abnormal uterine bleeding or dysmenorrhea. One possible explanation for this finding is that the sinus tract was too small to cause blood influx into the uterine cavity. CONCLUSION: Our case report provides valuable insights for clinicians to better understand this uncommon disease and reduce the incidence of misdiagnosis.

8.
NeuroRehabilitation ; 52(3): 477-483, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37005898

RESUMO

BACKGROUND: Unilateral neglect (UN) is a frequent cognitive disability following a stroke. Additional research is needed to determine the most effective cognitive rehabilitation techniques. OBJECTIVE: Based on the unilateral neglect neural network, we aim to explore the effect of a new model of transcranial direct current stimulation (tDCS) combined with cognitive training on stroke patients with unilateral neglect. METHODS: Thirty stroke patients with UN after stroke were randomly divided into three groups. All patients received cognitive training for UN and transcranial direct current stimulation with an anode placed on the corresponding part of the right hemisphere for 2 weeks. Treatment group A received multi-site tDCS from the inferior parietal lobule, middle temporal gyrus to prefrontal lobe. Group B received single-site tDCS of the inferior parietal lobule. The improvement of UN symptoms was evaluated by the scores of the Deviation index and Behavioral Inattention Test conventional tests. RESULTS: All groups showed improvements in all tests, and the scores of the treatment groups were statistically significant compared with the control group. CONCLUSION: Both single-site tDCS and multi-site tDCS have therapeutic effects on UN after stroke, and the difference in the therapeutic effects of the two modes still needs to be further explored.


Assuntos
Reabilitação do Acidente Vascular Cerebral , Acidente Vascular Cerebral , Estimulação Transcraniana por Corrente Contínua , Humanos , Estimulação Transcraniana por Corrente Contínua/métodos , Treino Cognitivo , Acidente Vascular Cerebral/psicologia , Reabilitação do Acidente Vascular Cerebral/métodos , Lobo Parietal
9.
Radiat Environ Biophys ; 62(2): 221-234, 2023 05.
Artigo em Inglês | MEDLINE | ID: mdl-37062024

RESUMO

Space radiation exposure from omnipresent Galactic Cosmic Rays (GCRs) in interplanetary space poses a serious carcinogenic risk to astronauts due to the-limited or absent-protective effect of the Earth's magnetosphere and, in particular, the terrestrial atmosphere. The radiation risk is directly influenced by the quality of the radiation, i.e., its pattern of energy deposition at the micron/DNA scale. For stochastic biological effects, radiation quality is described by the quality factor, [Formula: see text], which can be defined as a function of Linear Energy Transfer (LET) or the microdosimetric lineal energy ([Formula: see text]). In the present work, the average [Formula: see text] of GCR for different mission scenarios was calculated using a modified version of the microdosimetric Theory of Dual Radiation Action (TDRA). NASA's OLTARIS platform was utilized to generate the radiation environment behind different aluminum shielding (0-30 g/cm2) for a typical mission scenario in low-earth orbit (LEO) and in deep space. The microdosimetric lineal energy spectra of ions ([Formula: see text]) in 1 µm liquid water spheres were calculated by a generalized analytical model which considers energy-loss fluctuations and δ-ray transport inside the irradiated medium. The present TDRA-based [Formula: see text]-values for the LEO and deep space missions were found to differ by up to 10% and 14% from the corresponding ICRP-based [Formula: see text]-values and up to 3% and 6% from NASA's [Formula: see text]-model. In addition, they were found to be in good agreement with the [Formula: see text]-values measured in the International Space Station (ISS) and by the Mars Science Laboratory (MSL) Radiation Assessment Detector (RAD) which represent, respectively, a LEO and deep space orbit.


Assuntos
Radiação Cósmica , Exposição à Radiação , Voo Espacial , Humanos , Astronautas , Eficiência Biológica Relativa , Íons
10.
BMC Neurol ; 23(1): 136, 2023 Mar 31.
Artigo em Inglês | MEDLINE | ID: mdl-37003976

RESUMO

BACKGROUND: Seeking positive and comprehensive rehabilitation methods after stroke is an urgent problem to be solved, which is very important to improve the dysfunction of stroke. The aim of this study was to investigate the effects of motor imagery-based brain-computer interface training (MI-BCI) on upper limb function and attention in stroke patients with hemiplegia. METHODS: Sixty stroke patients with impairment of upper extremity function and decreased attention were randomly assigned to the control group (CR group) or the experimental group (BCI group) in a 1:1 ratio. Patients in the CR group received conventional rehabilitation. Patients in the BCI group received 20 min of MI-BCI training five times a week for 3 weeks (15 sessions) in addition to conventional rehabilitation. The primary outcome measures were the changes in Fugl-Meyer Motor Function Assessment of Upper Extremities (FMA-UE) and Attention Network Test (ANT) from baseline to 3 weeks. RESULTS: About 93% of the patients completed the allocated training. Compared with the CR group, among those in the BCI group, FMA-UE was increased by 8.0 points (95%CI, 5.0 to 10.0; P < 0.001). Alert network response time (32.4ms; 95%CI, 58.4 to 85.6; P < 0.001), orienting network response (5.6ms; 95%CI, 29.8 to 55.8; P = 0.010), and corrects number (8.0; 95%CI, 17.0 to 28.0; P < 0.001) also increased in the BCI group compared with the CR group. Additionally, the executive control network response time (- 105.9ms; 95%CI, - 68.3 to - 23.6; P = 0.002), the total average response time (- 244.8ms; 95%CI, - 155.8 to - 66.2; P = 0.002), and total time (- 122.0ms; 95%CI, - 80.0 to - 35.0; P = 0.001) were reduced in the BCI group compared with the CR group. CONCLUSION: MI-BCI combined with conventional rehabilitation training could better enhance upper limb motor function and attention in stroke patients. This training method may be feasible and suitable for individuals with stroke. TRIAL REGISTRATION: This study was registered in the Chinese Clinical Trial Registry with Portal Number ChiCTR2100050430(27/08/2021).


Assuntos
Interfaces Cérebro-Computador , Reabilitação do Acidente Vascular Cerebral , Acidente Vascular Cerebral , Humanos , Reabilitação do Acidente Vascular Cerebral/métodos , Hemiplegia/etiologia , Recuperação de Função Fisiológica/fisiologia , Eletroencefalografia/métodos , Acidente Vascular Cerebral/complicações , Extremidade Superior
11.
Pediatr Surg Int ; 39(1): 154, 2023 Mar 20.
Artigo em Inglês | MEDLINE | ID: mdl-36939896

RESUMO

BACKGROUND: Fulminant necrotizing enterocolitis (FNEC) is the most serious subtype of NEC and has a high mortality rate and a high incidence of sequelae. Onset prediction can help in the establishment of a customized treatment strategy. This study aimed to develop and evaluate a predictive nomogram for FNEC. METHODS: We conducted a retrospective observation to study the clinical data of neonates diagnosed with NEC (Bell stage ≥ IIB). Neonates were divided into the FNEC and NEC groups. A multivariate logistic regression model was used to construct the nomogram model. The performance of the nomogram was assessed using area under the curve, calibration analysis, and decision curve analysis. RESULTS: A total of 206 neonate cases were included, among which 40 (19.4%) fulfilled the definition of FNEC. The identified predictors were assisted ventilation after NEC onset; shock at NEC onset; feeding volumes before NEC onset; neutrophil counts on the day of NEC onset; and neutrophil, lymphocyte, and monocyte counts on day 1 after NEC onset. The nomogram exhibited good discrimination, with an area under the receiver operating characteristic curve of 0.884 (95% CI 0.825-0.943). The predictive model was well calibrated. Decision curve analysis confirmed the clinical usefulness of this nomogram. CONCLUSION: A nomogram with a potentially effective application was developed to facilitate the individualized prediction of FNEC, with the hope of providing further direction for the early diagnosis of FNEC and timing of intervention.


Assuntos
Enterocolite Necrosante , Doenças Fetais , Doenças do Recém-Nascido , Feminino , Recém-Nascido , Humanos , Estudos Retrospectivos , Enterocolite Necrosante/diagnóstico , Enterocolite Necrosante/epidemiologia , Nomogramas , Fatores de Risco
12.
Int J Mol Sci ; 24(1)2023 Jan 01.
Artigo em Inglês | MEDLINE | ID: mdl-36614179

RESUMO

Oral squamous cell carcinoma (OSCC) has a five-year survival rate of less than 50% due to its susceptibility to invasion and metastasis. Crosstalk between tumor cells and macrophages has been proven to play a critical role in tumor cell migration and invasion. However, the specific mechanisms by which tumor cells interact with macrophages have not been fully elucidated. This study sought to investigate the regulatory mechanism of tumor cell-derived alpha-enolase (ENO1) in the interaction between tumor cells and macrophages during OSCC progression. Small interfering RNA (siRNA) transfection and recombinant human ENO1 (rhENO1) stimulation were used to interfere with the interaction between tumor cells and macrophages. Our results showed that ENO1 was expressed higher in CAL27 cells than in HaCaT cells and regulated lactic acid release in CAL27 cells. Conditioned medium of macrophages (Macro-CM) significantly up-regulated the ENO1 mRNA expression and protein secretion in CAL27 cells. ENO1 promoted the migration and invasion of tumor cells by facilitating the epithelial-mesenchymal transition (EMT) through macrophages. ENO1 orchestrated the IL-6 secretion of macrophages via tumor cell-derived lactic acid and the paracrine ENO1/Toll-like receptor (TLR4) signaling pathway. In turn, IL-6 promoted the migration and invasion of tumor cells. Collectively, ENO1 promotes tumor cell migration and invasion by orchestrating IL-6 secretion of macrophages via a dual mechanism, thus forming a positive feedback loop to promote OSCC progression. ENO1 might be a promising therapeutic target which is expected to control OSCC progression.


Assuntos
Carcinoma de Células Escamosas , Neoplasias de Cabeça e Pescoço , Neoplasias Bucais , Humanos , Carcinoma de Células Escamosas/patologia , Carcinoma de Células Escamosas de Cabeça e Pescoço/metabolismo , Neoplasias Bucais/patologia , Interleucina-6/genética , Interleucina-6/metabolismo , Retroalimentação , Linhagem Celular Tumoral , Macrófagos/metabolismo , RNA Interferente Pequeno/metabolismo , Fosfopiruvato Hidratase/genética , Fosfopiruvato Hidratase/metabolismo , Neoplasias de Cabeça e Pescoço/metabolismo , Movimento Celular/fisiologia , Proliferação de Células , Transição Epitelial-Mesenquimal/genética , Proteínas de Ligação a DNA/genética , Proteínas de Ligação a DNA/metabolismo
13.
ACS Omega ; 7(48): 43770-43783, 2022 Dec 06.
Artigo em Inglês | MEDLINE | ID: mdl-36532108

RESUMO

The heterogeneity of pore structure in coal reservoir is extremely complex. In this paper, mercury intrusion porosimetry (MIP) and liquid nitrogen adsorption (LNA) were used to describe pore characteristics of macro-coal components, and the fractal characteristics of pores and their relationship with adsorption and desorption were discussed. The findings revealed that there were obvious differences in pore characteristics of different macro-coal components at different pore sizes. The total pore volume of vitrain and durain was equivalent, and the total specific surface area was larger than durain, indicating that the micropores in vitrain were more developed, while the macropores in durain were more developed, indicating that the specific surface area was smaller. Fractal results indicated that the pore structure of coal was more complex with the increase of pore diameter. The Da1 and Da2 of vitrain and durain were affected by larger specific surface area and pore volume. The Ds of vitrain increased first and then decreased with the content of vitrinite, while that of durain was the opposite. The relationship between the adsorption capacity of vitrain and fractal dimension Da1 was binomial distribution, and it was positively correlated with Da2. The adsorption capacity of durain samples increased first and then decreased with Da1. With the increase of fractal dimension Ds, the theoretical desorption rate and recovery rate of durain had a downward trend, that is, the more complex the pore structure, the poor the desorption efficiency.

14.
Nanoscale ; 14(48): 18123-18132, 2022 Dec 15.
Artigo em Inglês | MEDLINE | ID: mdl-36449014

RESUMO

Designing amorphous/crystalline heterophase catalysts is still in the initial stage, and the study of amorphous/crystalline heterophase and carbon-free catalysts has not yet been realized. Herein, we report a unique amorphous/crystalline heterophase catalyst consisting of NiFe alloy nanoparticles (NPs) supported on Ti4O7 (NiFe/Ti4O7) for the first time, which is achieved by a heterophase supporting strategy of dual heat treatment. Surprisingly, the amorphous/crystalline heterophase is flexibly composed of amorphous and crystalline phases of alloy NPs and Ti4O7. The heterophase coupling endows the catalyst with a low overpotential (256 mV at 10 mA cm-2), a small Tafel slope (47 mV dec-1) and excellent endurance stability (over 100 h) in 1 M KOH electrolyte, which already outperforms commercial RuO2 (338 mV and 113 mV dec-1) and exceeds most reported representative carbon-based and titanium-based non-precious metal catalysts. The density functional theory (DFT) calculations and experimental results reveal that the unique amorphous/crystalline heterophase coupling in NiFe/Ti4O7 results in electron transfer between the alloy NPs and Ti4O7, allowing more catalytically active sites and faster interfacial electron transfer dynamics. This work provides insights into the synthesis of amorphous/crystalline heterophase catalysts and can be generalized to the heterophase coupling of other transition metal-based electrocatalysts.

15.
Curr Oncol ; 29(11): 8146-8159, 2022 10 28.
Artigo em Inglês | MEDLINE | ID: mdl-36354703

RESUMO

(1) Background: The aim of this study was to identify risk factors for distant metastasis of pancreatic ductal adenocarcinoma (PDAC) and develop a valid predictive model to guide clinical practice; (2) Methods: We screened 14328 PDAC patients from the Surveillance, Epidemiology, and End Results (SEER) database between 2010 and 2015. Lasso regression analysis combined with logistic regression analysis were used to determine the independent risk factors for PDAC with distant metastasis. A nomogram predicting the risk of distant metastasis in PDAC was constructed. A receiver operating characteristic (ROC) curve and consistency-index (C-index) were used to determine the accuracy and discriminate ability of the nomogram. A calibration curve was used to assess the agreement between the predicted probability of the model and the actual probability. Additionally, decision curve analysis (DCA) and clinical influence curve were employed to assess the clinical utility of the nomogram; (3) Results: Multivariate logistic regression analysis revealed that risk factors for distant metastasis of PDAC included age, primary site, histological grade, and lymph node status. A nomogram was successfully constructed, with an area under the curve (AUC) of 0.871 for ROC and a C-index of 0.871 (95% CI: 0.860-0.882). The calibration curve showed that the predicted probability of the model was in high agreement with the actual predicted probability. The DCA and clinical influence curve showed that the model had great potential clinical utility; (4) Conclusions: The risk model established in this study has a good predictive performance and a promising potential application, which can provide personalized clinical decisions for future clinical work.


Assuntos
Carcinoma Ductal Pancreático , Neoplasias Pancreáticas , Humanos , Nomogramas , Estadiamento de Neoplasias , Prognóstico , Estudos Retrospectivos , Neoplasias Pancreáticas/patologia , Neoplasias Pancreáticas
16.
Folia Neuropathol ; 60(2): 257-260, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35950478

RESUMO

Aphasia is a common consequence of stroke and repetitive transcranial magnetic stimulation (rTMS) may be a promising brain stimulation technique in the treatment of aphasia. However, there are few reports about the therapeutic effect of rTMS for Broca's area in patients with sensory aphasia. This study reported one stroke patient with sensory aphasia who received 6 treatment sessions of low-frequency rTMS before speech and language therapy. The target area was the Broca mirror area in the right hemisphere. After treatment, the auditory comprehension of the patient improved from 46 to 112, the naming improved from 18 to 32, and the AQ improved from 34.2 to 42.6. However, the level of functional language, spontaneous speech and repetition did not show obvious improvement.


Assuntos
Afasia , Acidente Vascular Cerebral , Afasia/etiologia , Afasia/terapia , Afasia de Wernicke/complicações , Área de Broca , Compreensão , Humanos , Acidente Vascular Cerebral/complicações , Acidente Vascular Cerebral/terapia , Estimulação Magnética Transcraniana/métodos
17.
Int J Oncol ; 61(4)2022 10.
Artigo em Inglês | MEDLINE | ID: mdl-35929518

RESUMO

Pancreatic cancer (PC) is a lethal type of cancer for which effective therapies are limited. Long non­coding RNAs (lncRNAs) represent a critical type of regulator category, mediating the tumorigenesis and development of various tumor types, including PC. However, the expression patterns and functions of numerous lncRNAs in PC remain poorly understood. In the present study, linc01614 was identified as a PC­related lncRNA. linc01614 was notably upregulated in PC tissues and cell lines and was associated with the poor disease­free survival of patients with PC according to the analysis of The Cancer Genome Atlas­derived datasets. Functionally, linc01614 knockdown suppressed PC cell proliferation, migration and invasion in vitro, and inhibited tumor proliferation in vitro and in vivo. Mechanistically, linc01614 overexpression stabilized the level of ß­catenin protein to hyperactivate the WNT/ß­catenin signaling pathway in PC cells. Further analyses revealed that linc01614 bound to GSK­3ß and perturbed the interaction between GSK­3ß and AXIN1, thereby preventing the formation of the ß­catenin degradation complex and reducing the degradation of ß­catenin. In summary, the present findings reveal that linc01614 may function as an oncogene and promote the progression of PC and may thus be considered as a potential therapeutic target in the future.


Assuntos
Neoplasias Pancreáticas , RNA Longo não Codificante , Linhagem Celular Tumoral , Movimento Celular/genética , Proliferação de Células/genética , Regulação Neoplásica da Expressão Gênica , Glicogênio Sintase Quinase 3 beta/genética , Glicogênio Sintase Quinase 3 beta/metabolismo , Humanos , Neoplasias Pancreáticas/genética , Neoplasias Pancreáticas/patologia , RNA Longo não Codificante/genética , RNA Longo não Codificante/metabolismo , Via de Sinalização Wnt/genética , beta Catenina/genética , beta Catenina/metabolismo , Neoplasias Pancreáticas
18.
Folia Neuropathol ; 60(1): 60-68, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35359146

RESUMO

INTRODUCTION: Focal lesion sites can predict the language function of patients with aphasia during the subacute or chronic phases. However, the relationship between focal lesion sites and language deficits in the acute phase remains unclear. Therefore, our study aimed to investigate the relationship between focal lesion sites and fluency, auditory comprehension, repetition and naming deficits in patients with acute aphasia to further understand the pathophysiological mechanism of aphasia. MATERIAL AND METHODS: We included a total of 52 patients with acute aphasia who had their first-ever stroke between June 2018 and June 2021 to investigate the association between focal lesion sites and fluency, auditory comprehension, repetition and naming deficits. Language function was assessed by the Western Aphasia Battery scale within one month of onset. The lesion sites were independently assessed by three professional speech and language pathologists according to the main sulcus of the brain within 1-2 days after stroke. RESULTS: Lesions involving the superior temporal gyrus, middle frontal gyrus, inferior frontal gyrus, precentral gyrus, postcentral gyrus, supramarginal gyrus, angular gyrus and insula were significantly associated with low fluency. Lesions involving the superior temporal gyrus, middle temporal gyrus, inferior temporal gyrus, middle frontal gyrus, inferior frontal gyrus, supramarginal gyrus and angular gyrus significantly resulted in auditory comprehension impairment. Lesions involving the superior temporal gyrus, middle temporal gyrus, middle frontal gyrus, inferior frontal gyrus, precentral gyrus, postcentral gyrus, supramarginal gyrus, angular gyrus and insula significantly resulted in repetition and naming deficits. CONCLUSIONS: Our study suggests that focal lesion sites could lead to different language function impairments in the acute phase of post-stroke aphasia, which adds to our understanding of speech pathology and provides a direction for future research and treatment.


Assuntos
Afasia , Acidente Vascular Cerebral , Afasia/complicações , Afasia/patologia , Encéfalo/patologia , Humanos , Fala/fisiologia , Acidente Vascular Cerebral/complicações , Acidente Vascular Cerebral/patologia , Lobo Temporal/patologia
19.
Neurol Sci ; 43(2): 863-872, 2022 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-34816318

RESUMO

OBJECTIVE: The aim of this meta-analysis was to evaluate the evidence on the effectiveness of music therapy in the recovery of language function in post-stroke aphasia, compared with conventional therapy or no therapy. METHODS: We searched studies that explored the effect of music therapy on language function in post-stroke aphasia and published in PubMed, Embase, the Cochrane Library, Web of Science, CINAHL, ProQuest Digital Dissertations, and ClinicalTrials.gov from inception to March 2021. Six reviewers independently screened out eligible studies, extracted data, and evaluated the methodological quality. Results were pooled using mean difference (MD) with 95% confidence interval (CI). Heterogeneity was assessed by the chi-square test and I2 statistic. RESULTS: Six studies were included in this meta-analysis involving 115 patients. The methodological quality of these studies ranged from poor to excellent. There was significant mean difference in functional communication for post-stroke aphasia by 1.45 (95% CI: 0.24, 2.65; P = 0.02, from poor to excellent evidence), in repetition by 6.49 (95% CI: 0.97, 12.00; P = 0.02, from acceptable to excellent evidence), and in naming by 11.44 (95% CI: 1.63, 21.26; P = 0.02, from acceptable to excellent evidence). But there was no significant difference in comprehension for post-stroke aphasia by 7.21 (95% CI: - 10.88, 25.29; P = 0.43, from acceptable to excellent evidence). CONCLUSIONS: Music therapy can improve functional communication, repetition, and naming in patients with post-stroke aphasia, but did not significantly improve comprehension. TRIAL REGISTRATION: CRD42021251526.


Assuntos
Afasia , Musicoterapia , Acidente Vascular Cerebral , Afasia/etiologia , Afasia/terapia , Compreensão , Humanos , Idioma , Acidente Vascular Cerebral/complicações , Acidente Vascular Cerebral/terapia
20.
Front Vet Sci ; 8: 701850, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34604368

RESUMO

The domestication process exerts different phenotypic plasticity between slow- and fast-growing breeds of chicken. Feed restriction has a critical role in production performance, physiological plasticity, and stress response. Our study aimed to explore how feed restriction programed the organ index, dopamine, and hippocampal transcriptome profile between slow- and fast-growing chickens, which were fed either ad libitum (SA and FA), or feed restricted to 70% of ad libitum (SR and FR), for 30 days. Results showed that feed restriction influenced the brain organ index (P < 0.05), but not the organ index of the heart, liver, and spleen. The slow-growing breed tested had a higher brain organ index than the fast-growing breed (P < 0.05). Under feed restriction conditions, both the slow- and fast-growing breeds had significantly elevated dopamine concentrations (P < 0.05) compared to those fed ad libitum. In the GO term, upregulated genes in the FA group were enriched in the mitochondria, respiratory chain, and energy metabolism compared to the SA group (P < 0.05). Membranes and ribosomes were enriched in the cellular component between the SR and FR groups (P < 0.05). In the KEGG functional pathways, upregulated DEGs in the FR group were enriched in the cardiovascular disease category and neurodegenerative disease category compared to the FA group (P < 0.05). Downregulated DEGs in the FA group were enriched in the oxidative phosphorylation and neurodegenerative disease categories (Parkinson's disease and Huntington's disease) compared with the SA group (P < 0.05). Upregulated DEGs in the FR group were enriched in the cardiovascular disease category, neurodegenerative disease category, and energy metabolism than the SR group (P < 0.05). In conclusion, feed restriction had profound effects on the brain organ index and plasma dopamine in the slow- and fast-growing chickens. Feed restriction may result in issues relating to cardiovascular and neurodegenerative diseases in the fast-growing breed tested, but not in the slow-growing breed.

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